Vehicle-mounted revolving crane



Jan. 22, 1957 H, SCHEUERPFLUG 2,778,507

VEHICLE-MOUNTED REVOLVING CRANE Filed Deo. .19, 1955 2 Sheets-Sheet 1 faqlnmlmun@ 'Milli la .www

1 d [Nl @Munn BY b ATTO NEYS Jan. 22, 1957 H. scHl-:UERPFLUG 2,778,507

VEHICLE- MOUNTED REvoLvINc. CRANE Filed Dec. `19, 1955 2 sheetsheet 2 Hill Illllllll Illllllllllllll Il II l II Il Illlll I BY l ATTOR YS United States Patent VEHICLE-MOUNTED REVOLVING CRANE Hans Scheuerptlug, Nurnberg, Germany, assigner to the firm Maschinenfabrik Augsburg-Numberg A. G., Numberg, Germany, a firm Application December 19, 1955, Serial No. 554,058

Claims priority, application Germany December 17, 1954 7 Claims. (Cl. 212-38) This invention relates to certain improvements in or relating to portable or revolving cranes.

In such cranes it is known to mount winch drums and their drives on the platform of the upper carriage of the revolving crane, i. e. to tix the bearing blocks or the gear boxes by screws on the surface of this platform which mostly is machined. With such an arrangement the load drums together with the gears are arranged close together in the longitudinal axis of the crane or of the upper carriage with the object of obtaining a narrow construction and an accessibility of the load drums from both sides. In this case only a single drivers seat can be provided beside one of the two supporting arms and outside thereof. Owing to the lack of space resulting from this known arrangement of the load drums and driving gears it is not possible to arrange several seats side by side between the supports, so that in a crane with a high travelling speed the driver and the assistant driver cannot be accommodated sitting side by side as in a truck. A further disadvantage of the Said equipment is its. high center of gravity, caused by the winch drums and gears arranged above the platform of the upper carriage between its supporting arms. By the high position of these parts which are accessible substantially from the top only, their attendance moreover is rendered diicult. In a further construction the winch drums and their drive are provided in the platform of the upper carriage, whereby it is intended to utilize the empty spaces of the box-shaped platform and to make the said gear members accessible from the outer surfaces of the platform. This construction by the large openings required therefore resul.s in a weakening of the stressed constructional part which can be compensated only by larger dimensions of the same.

It is an object of the present invention to provide an arrangement which does not have the said drawbacks.

With this and further objects in view, according to the invention a pair of longitudinal girders are provided which are interconnected by a platform and on which the load drums are mounted so as to be outwardly directed, or on whose transverse connecting wall the luing drum is mounted, all the gears driving the winch drums being arranged substantially between the longitudinal girders and behind the platform, so as to be freely accessiblev from the upper and lower sides. Hereat, the distributing gear, forming part of the 'gear system, is arranged so as to be capable of being swung out in an upward or downward direction. Where the upper carriage is enclosed in a protective hut or cabin, the winch drums are accessible from the outside through closable openings of this protective hut. According to a special feature of the invention the longitudinal girders which are constructed as supporting arms, are filled with a selfhardening substance, e. g., reinforced heavy spar or barium sulphate concrete, so as to form counterweights.

Other and further objects, features and advantages of the invention will be pointed out hereinafter and appear ICC in the appended claims forming part of the application.

In the accompanying drawings a now preferred embodiment of the invention is shown by way of illustration and not by way of limitation.

Fig. 1 is a plan view on a portable or vehicle-mounted revolving crane,

Fig. 2 is a section on line B-B of Fig. l,

Fig. 3 is a section on line A-A of Fig. 2,

Fig. 4 is a diagrammatic plan view of the gear driving the various Winches of the revolving crane, on a larger scale compared to Figs. l-3,

Fig. 5 is a diagrammatic sectional view of the distributing gear, on a still larger scale, and

Fig. 6 is a detail thereof, in a cross sectional view.

Similar reference numerals denote similar parts in the different views.

Referring now to the drawings in greater detail, it will be seen that the lateral girders 1, 2 of the upper carriage are rigidly connected to each other by a platform 3 which is made so short that it is just able to carry, apart from the turntable 4 provided with a ball race, the support for the crane drivers seat and for the seats of possible assistant drivers arranged side by side. The two longitudinal girders 1, 2 on their front ends terinate in a pair of bearing blocks 5 in and between which the jib 6 of the crane is mounted.

The rearward upwardly directed ends of the longitudinal girders 1, 2 are constructed as supporting arms 7 for the shaft 36 of snatch blocks or pulleys 8 to 10 serving for changing the direction of the rope. The load drums 11, 12 may be mounted in per se known manner, outside of the supporting arms 7, 7a, on a shaft 37 mounted in the arms 7. The lufng drum 13 which may be constructed in accordance with the load drums, is mounted in the same way on the outside of a traverse 14 which is preferably hollow and interconnects the two supporting arms 7, 7a. The partition wall 14a of the traverse 14 is directed towards the interior of the upper carriage and bent several times at right angles in reverse directions in its cross section, meander-fashion (Fig. 2), so that a self-hardening substance, e. g. reinforced heavy spar concrete, can be lled between the partition wall 14a and the rearwardly directed boundary wall 15 of the traverse 14, so as to form a counterweight. This selfhardening substance may also be lled into the hollow lateral girder members 7, 7a.

The load drums 11 to 13, Figs. 2 and 4, are driven by the driving motor or engine 39 of the vehicle which motor is arranged in the truck 49 of the vehicle-mounted revolving crane, or by a separate motor (not shown) arranged beside the same, through a miter gear 16 whose vertical driving shaft 41 is passed through a central opening of the platform 3. The mi-ter gear 16 in the upper carriage by a shaft 38 acts upon a distributing gear 17 whose secondary shafts 21, 22, 23 may be connected, through clutches 18, 19, 20, ei.her simultaneously or individually, to their winch drums 11, 12 and i3, respectively. The distributing gear is constructed in such a way that it can be swung from its working position out of the region of the supporting framework defnedby the parts 1 to 3, upwardly or downwardly, independently ofthe rest of the gear, for facilitating interchange of the discs of the clutches 18, 19, Fig. 4. In order to permit this outward swinging motion, the casing 42, Figs. 4 and 5, of the distributing gear 17 is hinged to the upper or lower end corner 24, 25, Fig. 2, of the platform 3 or of an extension thereof in the manner shown in greater detail in Fig. 5, and the shafts 21-23 and 38 are constructed in-the form of knockout spindles engaged in sliding couplings 43, 44, 45, respectively, each consisting of a sleeve formed wi.h axial grooves 54, for engagement with complementary keys or projections 55 of thesaid shafts, Fig. 6, in such a way that the shafts can be withdrawn from the sleeves for pivotal swinging of the casing 42 about a pair of fulcrums formed by projecting hinge pins S6 of the casing d?. mounted in bearings 6l, d2 fixedly mounted on the platform. rThe sleeves are mounted for rotation in ball bearings 4o, d'7, 48, fi?? mounted in the casing 42, and the sleeves and are connected, by short shaft ends 5d, 5l, with their bevel wheels 52, 5.o-, while the bevel wheel 5i? meshing therewith is lixedly mounted the sleeve In the driving slate this position is fined by additional screw joints (not shown) connecting the casing d?, with the platform 3 or with the longitudinal girders l, After the unscrewing of these screw joints the distributing oear i7 can be supported by an auxiliary winch 26, Fig. Z, as it is swung upwards r downwards from its working position; the auxiliary winch advantageously may be mounted on the wall of the traverse ld of the longitudinal girders fr, 2, or of the supporting arms 7., 7a. The lui-ling or pulling-in rope 27 which is guided to the iib over the pulley lil, is passed from the same to an attachment collar 28 arranged on the shaft 356 the rope pulleys S to lil. The ropes 29, 3'@ of the load drums, one of which (e. g. the load drum may be associated to the dragline equipment, run over the snatch blocks 8, 9 to the head end of the jib ti where they are guided in per se known manner so as to pass by lthe same. The couplings i8 to Ztl may be constructed as multiple disc clutches whose outer bodies preferably are constructed as brake drums 3i adapted for cooperation with brake blocks 32, so that the rope drums ll to i3 can be stopped when the disc clutches are released.

Owing to the arrangement hereinbefore described, the winch drums llt to R3 are freely accessible from the front side and from all sides of their periphery. lf the entire above mentioned upper carriage is surrounded by a protective hut, then cutouts 3d are provided in the cover of the hut l.-3), in the region of the winch drums ll to i. e. in their axial extension, which cutouts can be closed by lids, doors, slides or the like 35' as long as access to the winch drums ll to lf3 is not desired.

As `will be seen from 4, the listing gear equipment is constructed in such a way that the winch drums ll to f3 together with their gears and brakes form together a cross. By ar inging the lifting gear drums outside of the interior space formed by the platform 3 and the lateral girders l, 2', the same in the manner known from high speed trucks may be designed as a -drivers compartment, which is free from any hindrance to the driving and operating personnel, by gears or secondary drives of any hind.

While the invention has been described in detail with espect to a now preferred example and embodiment of `he invention it will be understood by those skilled in the .rt iter undersr ding the invention that various changes modiications may be made without departing from the spirit and scope of the invention and it is intended, therefore, to coverA all such changes and modifications in the appended claims.

l claim:

l. A portable revolving crane, comprising a pair of longitudinal girders, a platform and a traverse connecting said girders, load drums mounted on the longitudinal girders, so as to be outwardly directed, a lung drum nounted on the traverse, and gears for driving said load and hiding drums, said gears being arranged substantially between the longitudinal girders and behind the platform, so as to be freely accessible from the upper and lower sides.

2. A portable revolving crane, comprising a pairV of longitudinal girders, a platform aud a traverse connecting said girders, load drums mounted on the longitudinal girders, so as to be outwardly directed, a luing drum mounted on the traverse, and gears including a distributing gear for driving said load and lufng drums, said gears being arranged substantially between the longitudinal girders and behind the platform, so as to be freely accessible from the upper and lower sides, and said distributing gear being adapted to be swung kout at least in one of the upward and downward directions.

3. A vehicle-mounted revolving crane including an upper carriage, a protective hut enclosing the upper carriage, a pair of longitudinal girders, a platform and a traverse connecting said girders, load drums mountedon the longitudinal girders, so as to be outwardly directed, a lufing drum mounted on the traverse, and gears for driving said load and lulling drums, said gears being arranged substantially between the longitudinal girders and behind the platform, so as to be freely accessible from the upper and lower sides, and said protective hut being provided with at least one closable opening, in such a way that the winch drums are accessible from the outside.

4. A portable revolving crane comprising a pair of longitudinal hollow girders constructed as supporting arms, a platform and a traverse connecting said girders with each other, said girders being filled with a selfhardening substance, load drums mounted on the longitudinal girders, so as to be outwardly directed, a lufng drum mounted on the traverse, and gears for driving saidl load and luffing drums, saidgears being arranged substantially between the. longitudinal girders and behind the platform, so as to be` freely accessible from the upper and lower sides.

5. A portable revolving crane comprising a pair of longitudinal girders constructed as supporting arms, a platform and a hollow traverse connecting said. girders with each other, said traverse being lled with a selfhardening substance,v load drums mounted on the longitudinal girders, so as to be outwardly directed, a lungdrum mounted on the traverse, and` gears for driving said load and lung drums, said gears being arrangedv substantially between the longitudinal girders and behind the platform, so as to be freely accessible from the upper and lower sides.

6. A portable revolving crane comprising a pain of longitudinal hollow girders constructed as supporting arms, a platform and a traverse connecting said girders with each other, said girders being filled with reinforced heavy spar, load drums mounted on the longitudinal girders, so as to be outwardly directed, a lui-ling drum' mounted on the traverse, and gears for driving saidA load and luffing drums, said gears being arranged substantially between the longitudinal girders and behind thc` platform, soas to be freely accessible from the upper and lower sides.

7. A portable revolving crane comprising a pair. ofy longitudinal, girders constructed as supporting, arms, a platform and a hollow traverse connecting said. girders.

with each other, said traverse being filled with reinforcedl heavy spar, load drums mounted on the longitudinal girders, so` as to be outwardly directed, a lufng, drummounted on the traverse, and gears for driving said load and luing drums, said gears beingy arranged'V substantially between the longitudinal. girders'y andy behind the` platform, so as to be` freely accessible from the upper and lower sides.

References Cited in the le of this patent UNITED STATES PATENTS 

